Denis Istomin came through yet another test at the BMW Open by FWU AG on Wednesday. The World No. 55 defeated Marinko Matosevic 6-7(6), 6-3, 7-5 for a place in his fourth ATP World Tour quarter-final of the season.

Denis Istomin came through yet another test at the BMW Open by FWU AG on Wednesday. The World No. 55 defeated Marinko Matosevic 6-7(6), 6-3, 7-5 for a place in his fourth ATP World Tour quarter-final of the season.